@AlanSill@mast.hpc.social
@AlanSill@mast.hpc.social avatar

AlanSill

@AlanSill@mast.hpc.social

Physics/cloud/data centers/HPC. This one's for personal viewpoints/tech stuff I find cool. For official work look elsewhere, for example at the metadata links here. Open to questions and try to reply. One of the admins here on mast.hpc.social

This profile is from a federated server and may be incomplete. Browse more on the original instance.

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Current status:

AlanSill, to random
@AlanSill@mast.hpc.social avatar

I am willing to make a giant donation to my party of choice if they commit to the firm and irrevocable promise that neither they nor any of their candidates will email, text, or phone me from now through the election.

ricci, to random
@ricci@discuss.systems avatar

On graduation day, a reflection on why I'm a professor:

I am where I am because of people at every stage of my life who have given me the opportunity, the support, the resources, the environment, the encouragement, to be successful. They've shared their knowledge, their experiences, they have been patient with me, and they have believed in me. Teachers, parents, friends, community, professors, mentors, colleagues. You bet I worked hard, but that hard work was possible and fruitful because of the environment that was built around me.

And now I get to do that for other people - AS A JOB. How fucking cool is that‽

AlanSill,
@AlanSill@mast.hpc.social avatar

@ricci Exactly how I feel. They didn't tell me about the bureaucracy that would come with the package, though!

AlanSill, to random
@AlanSill@mast.hpc.social avatar

You're welcome for all the extra electricity, folks. (We'll need it back during the hot Texas summer, though!)

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Hear me out: a petition to standardize where the "refresh" button is located in all browser layouts.

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Here's our latest training/outreach cluster based on Radxa X2L SBCs
4 nodes of quad-core X86 Celeron
8 GB memory/node
PoE local power control through switch
Rocky 9.3 OS
Warewulf 4.5 for node provisioning
We’ll soon add (as on our other ones already built and to come) Slurm, Spack, and a suite of HPC applications
Head node has 2TB of NVMe storage nfs mounted to the worker nodes, which are diskless and stateless
Total cost about $700 (full parts list and accounting to come)
Note the carry handle!

Description of cluster is in the text of the post
Description of cluster is in the text of the post

AlanSill,
@AlanSill@mast.hpc.social avatar

@gubi They're coming! We put this together based on earlier efforts explicitly to make it so that it could be reproduced easily by others. There's nothing really unique about what we are doing, but we tried to make a small package with a minimum of special parts.

ramikrispin, to datascience
@ramikrispin@mstdn.social avatar

(1/3) Learn R Through Examples 🚀👇🏼

The Learn R Through Examples by Xijin Ge, Jianli Qi, and Rong Fan provides an introduction to data analysis with R. The book covers the core topics of data analysis using different datasets, from simple and clean datasets to messy and big datasets. 🧵👇🏼

#RStats #DataScience #datavisualization #data

image/png

AlanSill,
@AlanSill@mast.hpc.social avatar

@ramikrispin Got any tips for what pointers to provide to folks with long-running R jobs on clusters on how to speed them up and preferably parallelize execution?

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Question for the USB-C cognoscenti if any out there: how can I take a raw 12V source and feed it correctly into a board that expects 12V on its USB-C power connector? Is this possible?

jwildeboer, to random
@jwildeboer@social.wildeboer.net avatar

Happiness is a hand full of Dutch liquorice. #GoodNight

AlanSill,
@AlanSill@mast.hpc.social avatar

@jwildeboer Careful, that's enough to have an affect on your blood pressure! https://www.sciencedaily.com/releases/2024/03/240314122145.htm

AlanSill, to random
@AlanSill@mast.hpc.social avatar

(Inquiry): Please help me install this software.
(Response): Sure! That can be installed via conda or spack. Follow these instructions.

(I): I don't have conda or spack installed.
(R): No problem! Here is where you can get these on our cluster.

(I): I can't seem to locate those directories. Here's a screenshot of the errors. I don't even see those directories.
(R): Hmm, that's not our login node. What cluster are you on? Run these commands.

(I): (Provides address)
(R): That's not our cluster!

AlanSill, to random
@AlanSill@mast.hpc.social avatar

I hereby propose designating March 29 to be Andres Freund Open Source Safety Day and am open to suggestions as to how this should be celebrated. Sorry @AndresFreundTec for your mentions! At minimum, you should be awarded permanent free registration to any software or tech conference you choose to attend. Thanks!

AlanSill, to random
@AlanSill@mast.hpc.social avatar

I’m up late, evaluations for the staff are due Monday, and there are these chocolate caramels handy. I like to think that I’m a strong person, but

AlanSill, to random
@AlanSill@mast.hpc.social avatar

We've opened another Enterprise Systems Analyst / Research Software Engineer position in my group at the High Performance Computing Center at Texas Tech. This is an exciting position for the right candidate. Ask me if you have any questions about the details! https://sjobs.brassring.com/TGnewUI/Search/home/HomeWithPreLoad?partnerid=25898&siteid=5635&PageType=JobDetails&jobid=857819

AlanSill, to random
@AlanSill@mast.hpc.social avatar

The lab where I did the work for my PhD is still going strong. https://www.kqed.org/news/11978051/unraveling-the-mysteries-of-the-universe-inside-slac

AlanSill, to random
@AlanSill@mast.hpc.social avatar

I have discovered a very useful way to enable the rootfs partition to be transferred to an NVMe drive that resides behind a PCIe switch when using a Raspberry Pi CM4 on a carrier board that would presumably work on Raspberry Pi 5's also, but the solution does not fit in the space available in this margin.

simplenomad, to fediverse
@simplenomad@rigor-mortis.nmrc.org avatar

Hmmm, every server I'm getting spam from has a new user in their public directory named yqqwe, and each one of these users is following mastodon_admin_yggwe on a single-user instance mastodon.tinynews.org. One can look at the 924 followers of this admin and they all are named yqqwe and they are all on servers I've been getting from.

AlanSill,
@AlanSill@mast.hpc.social avatar

@FoW @vees @simplenomad @dansup Thanks for this notice. We had suspended an account with this name Jan. 29 but the data had not hit the timeout yet for deletion. Based on this we deleted the data also.

AlanSill, to random
@AlanSill@mast.hpc.social avatar

If anyone is interested in learning more about our inexpensive HPC training projects based on building single board computer clusters, please feel free to check out this topic in the hpc.social Slack: https://hpcsocial.slack.com/archives/C06FZSR2EKF/p1708193836321069 or the one in the corresponding Discord server: https://discord.com/channels/961447428140204072/975666560612048916/1208468661044777000
(Visit https://hpc.social/projects/chat to find links to join the servers if you haven't already.)

giuseppebilotta, to random
@giuseppebilotta@fediscience.org avatar

One of the reviewers for the manuscript on introducing CPU support in asked for scalability tests on more than 8 cores (when I originally wrote the whole thing the only decent CPU I had at hand was an AMD Ryzen 7 3700X 8-Core Processor). It's a reasonable request, so I've been running tests on the new server we got at , that sports a dual AMD EPYC 7713 64-Core Processor. The most interesting so far has been that GPUSPH does seem to scale decently, but the baseline is lower.

AlanSill,
@AlanSill@mast.hpc.social avatar

@giuseppebilotta We have had good success with the LIKWID toolkit: https://hpc.fau.de/research/tools/likwid/

geerlingguy, to RaspberryPi
@geerlingguy@mastodon.social avatar

When did Raspberry Pi become the villain? https://www.youtube.com/watch?v=jjzvh-bfV-E

AlanSill,
@AlanSill@mast.hpc.social avatar

@geerlingguy Really nice summary and demo to boot (literally)! Quick question: I use RPis in the data center primarily these days to get easy access to GPIO including 1wire sensors. Are there good equivalent boards available for the small x86 boxes I can use with Linux?

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Your occasional but persistent reminder that there is no AI, there is only obscure scripting with unexplored failure outcomes. Oh, and there is now plagiarism-as-a-service to muddy things up further.

Give it up! You are only wasting time, effort, money, energy, and contributing to warming of the planet.

geerlingguy, to random
@geerlingguy@mastodon.social avatar

I wouldn't go that far... maybe "a guy who can hack together a pre-made kit and only end up with a few small cuts..."

AlanSill,
@AlanSill@mast.hpc.social avatar

@geerlingguy So, then, a modest modding genius.

AlanSill, to random
@AlanSill@mast.hpc.social avatar

If you are traveling to Brussels from the US for @fosdem '24 and are willing to carry a small box of https://hpc.social stickers with you to make attendees there very happy, please let me know by DM or email or on one of the hpc.social chat forums. Thanks!

AlanSill, to random
@AlanSill@mast.hpc.social avatar

CRediT (Contributor Roles Taxonomy) is a high-level taxonomy including 14 roles that can be used to represent roles played by contributors to research outputs and each contributor’s specific contribution to the scholarly output.
14 Contributor Roles:
Conceptualization
Data curation
Formal Analysis
Funding acquisition
Investigation
Methodology
Project administration
Resources
Software
Supervision
Validation
Visualization
Writing – original draft
Writing – review & editing
https://credit.niso.org/implementing-credit/

AlanSill, to random
@AlanSill@mast.hpc.social avatar

Anyone have the performance per watt comparisons among the latest AMD, NVIDIA, and cloud-vendor CPU and GPU announcements?

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